fix tarball sha256

Author: scpeters

Formula/ignition-launch3.rb

@@ -3,7 +3,7 @@ class IgnitionLaunch3 < Formula
   homepage "https://github.com/ignitionrobotics/ign-launch"
   url "https://osrf-distributions.s3.amazonaws.com/ign-launch/releases/ignition-launch3-3.0.0~pre1.tar.bz2"
   version "3.0.0~pre1"
-  sha256 "c5608083c551d4121f176cdf58d921b71f37ed4625277bb484b839429373a649"
+  sha256 "693321873ffb38d2979011966c36c7a8ebf80a836380211f151732d01522b241"
   license "Apache-2.0"
 
   head "https://github.com/ignitionrobotics/ign-launch", branch: "master"